The AirTAC AirTAC SDA25X55SB Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 55mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA25X55SB is a double-acting, single-rod compact cylinder engineered to deliver 245.4 N of push force and 206.2 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a highly unified unit, significantly reducing axial mounting depth where a conventional round-body actuator would fail to fit. The internal bore is hard-anodized for durability, operating smoothly at speeds between 30 and 500 mm/s.
This specific configuration includes an integrated piston magnet for position sensing alongside a male M8x1.25 threaded rod end. Circumferential grooves around the body accept AirTAC reed or electronic switches to track the 55 mm travel. Deceleration at the stroke extremes relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should moderate approach speeds or utilize external shock absorbers for high-energy loads.
| Model | AirTAC SDA25X55SB Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Drives the linear cutting head on an electronic board separator, utilizing the 245.4 N extend force to slice through substrate materials cleanly within a tight equipment footprint.
Pushes lightweight parcels off a high-speed logistics belt, where the 55 mm stroke and integrated magnetic sensing ensure precise routing transitions.
Actuates the mechanical folding arm on a packaging line to tuck minor flaps prior to tape sealing, relying on the male M8x1.25 rod thread for secure linkage.
When sizing this actuator, evaluate your force margins carefully: stepping down to the SDA20 yields 157.1 N of push at 0.5 MPa, while stepping up to the SDA32 provides 402.1 N. The 25 mm bore here offers a computed safe working load of roughly 147 N (about 60 percent of its 245.4 N capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin. If your machinery loses air pressure or the control valve centers, this cylinder will drift and cannot sustain a load, as the rubber bumper only decelerates the piston near the end of its travel rather than locking it in place.
To finalize your order, confirm the 25 mm bore, 55 mm stroke, M5x0.8 air port, and the two option codes present here: the S designation for the magnetic piston and the B designation for the male-threaded rod end.
Quick checklist
This 25 mm bore double-acting cylinder generates 245.4 N push and 206.2 N pull at 0.5 MPa, 343.6 N push and 288.6 N pull at 0.7 MPa, with a theoretical maximum push of 50 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa.
No, the SDA series uses a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion. For high kinetic energy applications, you should slow the approach speed or install an external shock absorber.
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